How grief for the loss of parents brings out the real nature of man:– by Tsang Shan.
The philosopher Tsang said, "I heard this from our Master:– 'Men may not have shown what is in them to the full extent, and yet they will be found to do so, on the occasion of mourning for their parents."

Legge XIX.17.

Tseng Tzu said, 'I have heard the Master say that on no occasion does a man realize himself to the full, though, when pressed, he said that mourning for one's parents may be an exception.'